“Warm cover”: precursory strong signals for haze pollution hidden in the middle troposphere
Data sets
Air temperature of surface observation data https://doi.org/10.5281/zenodo.5371982
L-band sounding data https://doi.org/10.5281/zenodo.5371868
The haze days of surface observation data https://doi.org/10.5281/zenodo.5372006
The PM2:5 concentration data https://doi.org/10.5281/zenodo.5372016
ERA-20C, Daily https://apps.ecmwf.int/datasets/data/era20c-daily/levtype=pl/
ERA-20C, Monthly Means of Daily Means https://apps.ecmwf.int/datasets/data/era20c-moda/levtype=pl/type=an/
ERA Interim, Daily https://apps.ecmwf.int/datasets/data/interim-full-daily/levtype=pl/
ERA Interim, Monthly Means of Daily Means https://apps.ecmwf.int/datasets/data/interim-full-moda/levtype=pl/
The NCEP/NCAR 40-Year Reanalysis Project (https://psl.noaa.gov/data/gridded/data.ncep.reanalysis. pressure.html) https://doi.org/10.1175/1520-0477(1996)077<0437:TNYRP>2.0.CO;2